Swivel-hook.



Patented May I5, [900. W. GRUZINGER.

SWIVEL HOOK.

(Application filed Jan. 3, 1900.)

(No Model.)

wlmasa'es; 5110 04 ATTOHNEYB IVILHELM GRGZINGER, OF GlWIUEND, GERMANY.

SWIVEL=HOOK.

SPECIFICATION forming part of Letters Patent No. 649,515, dated May 15,1900.

Application filed January 3, 1900. Serial No. 248. (No model.)

To (0% whom, it may concern.-

Be it known that I, WILHELM GRESZINGER, a subject of the King ofWiirtemberg, residing at Gmuend, WVi'irtemberg, Germany, have invented aHook with Bayonet-Catch for \Vatch- Chains, of which the following is afull, clear, and exact description.

My invention relates to swivel hooks such as are used on watch-chainsand in like situ= ations.

The object of the invention is to provide a hook simple in structurewhich may be closed securely and which will not become free or breakunder strain.

To this end the invention includes a shank and hook, with a hood mountedon the shank having a portion adapted to interlock with the end of thehook.

The invention is illustrated in the accompanying drawings, in which-Figure 1 is a central Vertical sectional view of the device; Fig. 2, aside elevation of the same; Fig. 3, a bottom plan view of the hood withthe shank in section. Fig. 4 shows a bottom plan view of the hook withthe shank in section on line A A of Fig. 2. Figs. 5 and 6 are sectionaland elevational views, respectively, of a modification.

The shank of the hook has a swiveled connection to the ring I), adaptedto be attached to the chain or the like. The shank terminates in a hooka, the end of which is provided with a transverse recess d and a beveledend 0. Upon the shank a conical hood 6 is loosely mounted, which isprovided at its lower edge with an inwardly-extending annular flange f,which is recessed at g. The wall of the hood forming the rear wall ofthis recess is beveled to correspond to the bevel c. In operation thehood is turned to bring the recess in alinement with the end of thehook, when this end is shoved into the hood through the recess until therecess d is in alinement with the flange f, when the hood .is turned tointerlock the flange with this latter recess. The side walls of therecess g are curved, so that as the hood is turned the shank opposite tothe end of the hook will ride easily into this recess, so that the partsmay be securely locked against accidental displacement, as shown in Fig.4. The curved sides of the recess 9 also allow of the shank riding outof the recess when an attempt to turn the hood is made so as to releasethe parts.

To prevent the hood slipping down on the shank and off the end of thehook when the hook and hood are disengaged, I provide, as shown in Figs.5 and 6, a lateral projection or lug 5 on the shank, which projectsbeyond the shank a sufficient distance to engage the head of the hood.

I clain1- 1. In combination, a hook having a shank, a hood mountedthereon having an annular flange and the end of said hook being recessedto engage said flange, substantially as described.

2. In combination, a hook having a shank, a hood revolubly mountedthereon having an annular flange with a recess therein, the side wallsof said recess being rounded, the end of said hook being adapted to passthrough the recess and engage said flange, substantially as described.

3. In combination, a hook having a shank, a hood loosely mounted thereonadapted to interlock with the end of the hook and a lateral projectionon the shank below the hood forming a stop for the same.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

WILIIELM GRGZINGER.

Witnesses KARL Boson, WM. HAHN.

